Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6662056 | Journal of Electroanalytical Chemistry | 2018 | 6 Pages |
Abstract
Highly monodispersed hollow PtPdAu nanoalloys (HNAs) are synthesized through two-step successive reduction (PtPdAu HNAs-1) and one-pot co-reduction method (PtPdAu HNAs-2) using PEO19-PPO69-PEO19 (P123) as both reductant and stabilizer. Subsequent X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and HRTEM revealed that both two kinds catalysts have a hollow alloy structure and the average particle size reached 10.4 and 9.6â¯nm, respectively. This work demonstrates that the addition of Au can effectively improve the electrocatalytic performance of Pt-based catalysts. By compared with PtPdAu HNAs-1 and commercial Pt/C, PtPdAu HNAs-2 exhibited superior performance toward methanol oxidation reaction (MOR), including a more negative onset potential of ~0.2â¯V, higher mass peak current density of 263.5â¯mAâ¯mgPtâ1 and lone-term durability.
Related Topics
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Chemical Engineering
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Authors
Di Chen, Lai-Ming Luo, Rong-Hua Zhang, Qing-Yun Hu, Chang-Ying Yang, Xin-Wen Zhou, Shao-Na Chen, Zhong-Xu Dai,